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Techno. & Science

  • Sunshine may boost your immune system, researchers say


    U.S. scientists have shown that a type of light found in sunshine directly activates T cells, which are used by our bodies to kill diseases.

    Researchers from Georgetown University Medical Centre isolated T cells in blood from humans and mice, then exposed them to blue light, one of the non-carcinogenic components of sunlight.

    The blue light appeared to make the cells start producing hydrogen peroxide, which is the bleach-like chemical cells release at the site of infections in order to kill bacteria.

    Scientists already knew that the production of hydrogen peroxide appears to make T cells move the sites of infections, but the new study makes clear that sunlight is probably what triggers the immune response, according to the study’s senior investigator Gerard Ahern.

    “T cells, whether they are helper or killer, need to move to do their work, which is to get to the site of an infection and orchestrate a response," Ahern said. "This study shows that sunlight directly activates key immune cells by increasing their movement."

    Ahern also added that blue light from the sun, or from special lamps, is safer than UV light, which can promote skin cancer and melanoma.

    Ahern suggested that blue light therapy might be a beneficial option to help patients boost their immunity if it’s discovered that blue light T cell activation only has positive effects on the body.

    It was also already understood that the body fights infections with vitamin D production that can be triggered by the sun, but the study’s lead researcher says the phenomenon the new research describes appears to be “completely separate.”

    In fact, Ahern says he believes “some of the roles attributed to vitamin D on immunity may be due to this new mechanism.”

    The research is published Tuesday in Scientific Reports.

    Source: -

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  • Google Just Launched A Totally New Operating System


    Android Things, Google’s new operating system to power your toasters, routers, refrigerators and just about everything

    It is said that that the next decade will belong to Internet of Things and so most major tech companies are now focussing their might on it and Google is not far behind. Recently the search giant released the developer preview of a new Android-based Operating System which comes with different tools like Android SDK, Android Studio, Google Play Services packed into a single OS.

    Android Things: Google Launches A New Operating System

    The tech giant Google announced on Tuesday announced Android Things – its operating system for Internet of Things projects. Android Things OS will power various IoT products like security cameras, connected speakers, routers and everything that is connected to the Internet. With the launch of Android Things, Google takes another step to put Android everywhere, from smartphones earlier to refrigerators, toasters, routers, cameras etc.

    Google’s Android Things operating system is not new, in fact, it is built on Brillo, an operating system. Brillo operating system was announced in 2015 by Google and specifically designed for the Internet of things. It seems that Google has fused Brillo operating systems with Android tools and repackaged it as Android Things operating system. The new operating system will have pretty much the same tools that Android developers are already accustomed too, such as Android Studio, Android SDK, Google Play and other Google services. This should help Internet of Things manufacturers adopt the new operating system as well as get Android developers on board for developing Apps for IoT devices.


    Android Things – like project Brillo – is designed to be very small and take up low memory, about 32 Mb or 64 Mb of RAM. Google has said that it will partner with SoC (system on a chip) makers to build certified development boards containing development modules like RAM, Flash Storage, WiFi, Bluetooth and other components, and is currently recommending using Intel Edison, NXP Pico, Raspberry Pi 3 among other devices, as developer kits.


    Devices running Android Things will be able to communicate with other Android and iOS devices through Weave, the company’s communication platform for Internet of Things. In future, such Android Things powered devices will also allow voice commands with Google Assistant.

    Android Things and IoT security

    Google’s foray into IoT OS space is noteworthy because of the growing concerns over security of Internet of Things connected devices. Recently, a botnet attack powered by Mirai malware powered a DDoS attack on a DNS  provider in the United States bringing down the Internet for whole of Mid-West and East Coast of US for a full day. Android Things will hopefully cover the security aspects of IoT devices and provide timely security fixes so that the IoT will not be used for Dyn like attacks in future.

    Source: -



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